Apparatus for washing waste gases and utilizing the heat thereof.



WITNESSES: W

I F. SARG ENT & H. C. HEATON. APPARATUS FOR WASHING WASTE GASES AND UTILIZING THE HEAT THEREOF. APPLICATION FILED mm 10. 1917.

1,291,175; Patnted Jan. 14,1919;

, SIN V EN TORS A T oRNEYs;

ments in Apparatus for lid . direct the gases toward lli and HERMAN (l.

which the following is asp anomaly-winema known thatwe,

HEATON,

United States, residing at (lhicagopinthe county of Cook, Stateof lllinois, have" mvented certain new and Washing Waste Gases and Utilizing the ecification.

llhe present-application 1s a division of an application filed by us April 2%, 1916, Serial No. 93,109, Patent No. 1,235,928,,dated August l, 1917. lhe invention relates to apj paratus for washin waste ases and utilizing the heat therco and wi by reference to the accompanying drawing which is a vertical section, more or less diagrammatic, through a steam bbiler plant containing our special washing apparatus.

Referring to the drawing the numeral 1 designates a bank of inclined generating tubes expanded into front and rear headers, said headers being connected b pipes to a steam and water drum 2. T eboiler is fired by any suitable type of stoker 3. The bank of tubes is provided with baffles to the uptake ends of the tubes. Above the bank of tubes, is a superheater 4, and above the latter is an economizer 5. The flow of the gases over the boiler tubes, superheaterand economizer is indicated b arrows, the flow being directed by suitable bafies, some of which balhes are shown. The parts above referred to maybe of any usual and well-known design and connected in a known manner, as indicated in the drawing. The arrangement shown is selected merely for the purpose 0 illustrating one type of boiler to which the invention may be applied.

6 indicates the washing preferably set above t e economlzer.

may be of any slutable or convenient form chamber which is having an opening near the lower part thereof into an induced draft fan 8 or other suction device, from which they are forced to the sta k or uptake. s rays-d into this chamber through a suitliledevice, such as a series ,of inclined and perforated wooden shelves or gratings 9 in the upper part of the chamber, the water belFnnnnmoK SARGENT citizens of the useful lmprove- Heat Thereof, of

lbe understood the level of the water being control The wash water is bl lllll T arcs s; ,s ciacaue er Lettersratenaf patentedllanltd, a al men and Anna, 1916, seen no: 93,109. Divided and this application aieauhi 10,1917.

' U i v Se'rialho. 179.620. I

pipe 11, the level ofth'e water being cone trolledby afloat valve 12.1.

bar 6 is apipe 13connected to a spra 14 1n the upper part of a chamber 15. A ove the level of the water in chamber 15 is an air inlet 16, and in the upper part thereof an air outlet leading to a fan 17 by which the air is delivered through the flue 18 to the .stoker boxes 19. The water from the air-moistening chamber 15 is returnedthrough pipe 10 by a 1pump 2Q to the shelves 9 in chamber 6, so t at the water may be used over and over again.- The water to make up plied to the chamber 15 through a, i e 21, l by a float valve. 1 The dust or soot removed from the gases in chamber 6 may be flushed out through a valve 22. The chamber 16 may be flushed out through a valve 23. 1 p

Among the advantages secured by our invention are that the gases leaving the boiler are washedfree fromsoot and dust-thereby furnace gases as more fully described in an e'iaoie application for patent, Serial No. filed December 8, 191 4.

What'ove claim and desire to secure by for evaporation or leakage is sup- 4 in g distributedlto the uppermost shelf from." the pipe 10. The initial. water supply may be admitted to the chamber 6 through a Leadingfrom the lower part otthechaim i Letters Patent of the United Stirtesisz- 1. In a steam boiler plant, a chamber to which the waste gases from the furnace thereof are delivered,- means for spraying water into said chamber, means for utilizing the wash water for moistenin combustion, and means for elivering the moistened air to'the boiler furnace.

' 2. In a steam boiler plant, a chamber to which the waste gases from the furnace thereof are delivered, means for spraying toe the air for 15 economizer, a chamberlto which the waste water into said chamber, means for delivering. air for combustion to the boiler furnace, and means for spraying the heated waterfrom said chamber into the air on its way to the furnace.

v3. In a steam boiler plant, a chamber to which the waste gases from the furnace thereof are delivered, means for washing-the gases thereima second chamber, means, for

delivering the wash liquid to said second chamber and for spraying it therein, and means for'- causing the air for combustion to flow through said second chamber on its way to the boiler furnace.

4.- A steam boiler plant comprising an gases from the furnace thereof are delivered 

